Erasing device for type-writing machines.



G. K. ANDREWS. ERASING DEVICE FOR TYPE WRITING MACHINES.

Patented June 8, 1909.

APPLICATION FILED NOV.16, 1908.

specification.

PATENT OFFICE.

GEORGE K. ANDREWS, OF WEBSTER GROVES, MISSOURI.

ERA$ING DEVICE FOR TYPE-WRITING MACHINES.

No. 924,215. Specification of Letters Patent Patented June 8, 1909.

Application filed November is, 1908. Serial No. 462,960.

To all whom itma/y concern:

Be it known that I, GEORGE K. ANDREWS, a citizen of the United States ofAmerica, residing at Webster Groves, in the county of St. Louis andState of Missouri, have invented certain new .and useful Improvements inErasing Devices for Type-Writing Machines, of which the following isafull, clear, and exact description, reference being had totheaccompanying drawings, forming part of this My mventlon relates to anattachment for typewriting machines whereby erasures upon sheets ofpaper or othermaterial written u on in the machinesmay be efficiently,readi y, and rapidly accomplished through mechanical means applied tothe typewriting machines adjacent to the carriages.

Figure I is a to or plan view of a type writing machine s own in dottedlines, and my erasing device shown in full lines thereon. Fig. II is anenlarged top or plan view of my erasing device. Fig. II is an enlargedcross section taken on the line III-III of Fig. II. Fig IV is anenlarged cross'section taken on the line IV-IV of Fig. II.

In theaccompanying drawings:1 designates a bearer bar that is adapted tobe suitably secured to the top frame of a'typewriting machine beneaththe carriage when said carriage is in its normal position. The

ed'into the top frame of typewriting Ina-- chine to connect the bearerbar to said frame, but any other desirable means of attaching the bearerbar may be employed. At one side of the bearer bar is a stop lug ormember 3 that projects upwardly above the plane of the bearer bar.

4 designates an eraser carrying lever that is pivoted'at 5 to the bearerbar 5 and is providedwith an outer arm which extends outwardly tooneside of thety ewriting machine and terminates in a ham le 6 by whichthe eraser carrying lever may be swung to and fro by rocking it upon itspivot point 5. At the inner end of the eraser carrying lever aretransverse arms 7 and 8, the arm 8 being provided with a socket 9 thatis adapted to receive an eraser. 10 that may be of rubber, or othersuitable abrasive materiaL,

In the practical use of my erasing device, after it has been suitablyattached to the frame of a typewriting machine so as to ocfro byoperation of the eraser carrying lever (I. The 0 erator then, bygrasping the han dle 6 of t e eraser carrying lever manipulate s saidlever to impart an oscillating movement thereto, as a result of whichthe eraser 10 is swung to and fro in abrasive contact with the sheet'ofmaterial in the typewriting machine carriage to perform the erasure of acharacter thereon which it may be desired to erase. During the erasingoperation, the carriage of the typewriting machine remains in a loweredposition, and the weight thereof offers sufficient resistance to theupward movement of the carriage and the sheet of material therein sothat the erasing action may be performed and the transverse arm 7 of theeraser carrying lever swings backwardly and forwardly upon the bearerbar 1 and acts as a resistance member to prevent downward movement ofthein'ner arm of the lever during the erasing action.- The stop member 3projecting upwardly from the bearer bar 1 serves to limit the de ree ofmovement of the eraser carrying lever when the eraser is moved in abackward direction in erasing action.

I claim 1. The combination with a typewriting 'machine having a frame, acarria e, and a lat en mounted in said carriage, e an erasmg devicecomprising a bearer adapted to be attached to the frame of saidtypewriting machine, an eraser carrying member swingingly connected tosaid bearer, an eraser carried by said eraser carrying member and swungtransversely of said platen by said carrying member. ,2. The combinationwith a typewriting ,machine having a frame, a carriage, and a platenmounted in said carriage, of an erasing device comprising a beareradapted to be attached to the frame of said typewriting machine, aneraser carrying lever swingingly connected to said bearer, and an erasercarried by said eraser carrying lever and swung transversely of saidplaten by said lever.

' 3. The combination with a typewriting machine having a frame, a carriae, and a platen mounted in said carriage, 0 an erasmg device comprisinga bearer adapted to be attached to the frame of said typewritingmachine, an eraser carrying member swingingly connected to said bearer,an eraser carried by said eraser carrying member and swung transverselyof said platen by said carrying member, and a stop for limiting thedegree of movement of said eraser carrying member. y

4. The combination with a typewriting machine havin a frame, a carria e,and a platen mounte in said carriage, 0 an erasing device comprising abearer adapted to be attached to the frame of said t pewriting machine,an eraser carrying member swingingly connected to said bearer, an erasercarried by said eraser carrying member and swung transversely of saidplaten by said car mg member, said erasercarrying member being providedwith a resisting member operable upon said bearer.

GEORGE K."ANDREWS. In presence 'of HOWARD G. 0001:, WALTEn ALLEN.

